Mixer concrete mixer truck, cement mixer, concrete mixer) used to transport construction of concrete special trucks;Because of its appearance, also often referred to as field.This kind of truck on device type cylinder concrete mixture mixing tube to carry.In the process of transportation will keep stirring drum rotation, to ensure the delivery of concrete will not set.After carrying the concrete, usually rinse mixing barrel inside, take up space, prevent hardening of the concrete mixing drum volume less and less.